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Abstract:

Effective adherence of pollen grains on the surface of the stigma is a crucial condition for tube germination and subsequent fertilization of ovules. We provide evidence, through computer simulations, that echinate and microechinate sculpture of pollen in Asteraceae could play an important role in that process. We show that electrostatic interaction increases in grains with few ornamental elements (echinate pollen typical of derived lineages) when compared with grains that have a large number of ornamental elements (microechinate pollen typical of basal lineages). We also show that grains of smaller size are more significantly affected by the electrostatic force. Although experimental studies are necessary to ascertain the real effect of electrostatic forces on pollen capture by the stigma in Asteraceae, our contribution suggests that these forces might have great biophysical significance in the evolution of the family. © 2018 The Linnean Society of London.

Registro:

Documento: Artículo
Título:Spines, microspines and electric fields: A new look at the possible significance of sculpture in pollen of basal and derived Asteraceae
Autor:Inchaussandague, M.; Skigin, D.; Dolinko, A.; Tellería, M.C.; Barreda, V.D.; Palazzesi, L.
Filiación:Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Física, Grupo de Electromagnetismo Aplicado, Ciudad Universitaria, Pabellón 1, Buenos Aires, C1428EHA, Argentina
CONICET-Universidad de Buenos Aires, Instituto de Física de Buenos Aires (IFIBA), Ciudad Universitaria, Pabellón 1, Buenos Aires, C1428EHA, Argentina
Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Biodiversidad y Biología Experimental, Ciudad Universitaria, Pabellón 2, Buenos Aires, C1428EHA, Argentina
CONICET, Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
Laboratorio de Sistemática y Biología Evolutiva, Museo de La Plata, Paseo del Bosque s/no B1900FWA, La Plata, Buenos Aires, Argentina
Sección Paleopalinología, División Paleobotánica, Museo Argentino de Ciencias Naturales, Av. Angel Gallardo 470, Buenos Aires, C1405DJR, Argentina
Palabras clave:Compositae; Computer simulations; Echinate and microechinate sculpture; Electric fields; Pollen; Asteraceae
Año:2018
Volumen:125
Número:4
Página de inicio:794
Página de fin:801
DOI: http://dx.doi.org/10.1093/BIOLINNEAN/BLY171
Título revista:Biological Journal of the Linnean Society
Título revista abreviado:Biol. J. Linn. Soc.
ISSN:00244066
CODEN:BJLSB
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244066_v125_n4_p794_Inchaussandague

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Citas:

---------- APA ----------
Inchaussandague, M., Skigin, D., Dolinko, A., Tellería, M.C., Barreda, V.D. & Palazzesi, L. (2018) . Spines, microspines and electric fields: A new look at the possible significance of sculpture in pollen of basal and derived Asteraceae. Biological Journal of the Linnean Society, 125(4), 794-801.
http://dx.doi.org/10.1093/BIOLINNEAN/BLY171
---------- CHICAGO ----------
Inchaussandague, M., Skigin, D., Dolinko, A., Tellería, M.C., Barreda, V.D., Palazzesi, L. "Spines, microspines and electric fields: A new look at the possible significance of sculpture in pollen of basal and derived Asteraceae" . Biological Journal of the Linnean Society 125, no. 4 (2018) : 794-801.
http://dx.doi.org/10.1093/BIOLINNEAN/BLY171
---------- MLA ----------
Inchaussandague, M., Skigin, D., Dolinko, A., Tellería, M.C., Barreda, V.D., Palazzesi, L. "Spines, microspines and electric fields: A new look at the possible significance of sculpture in pollen of basal and derived Asteraceae" . Biological Journal of the Linnean Society, vol. 125, no. 4, 2018, pp. 794-801.
http://dx.doi.org/10.1093/BIOLINNEAN/BLY171
---------- VANCOUVER ----------
Inchaussandague, M., Skigin, D., Dolinko, A., Tellería, M.C., Barreda, V.D., Palazzesi, L. Spines, microspines and electric fields: A new look at the possible significance of sculpture in pollen of basal and derived Asteraceae. Biol. J. Linn. Soc. 2018;125(4):794-801.
http://dx.doi.org/10.1093/BIOLINNEAN/BLY171